Improvement in devices for cutting off and dressing the ends of tubes



W. CHESTER.

Devices for Cutting Off and Dressing the Ends .of Tubes.

N0.l55,|43 Patented Sept.22,1874.

WITNESSES. INVENTOR' UNITED STATES PATENT OFFICE.

WILLIAM CHESTER, OF NEW YORK, N. Y., ASSIGNOR TO B. HOE &OO., OF SAMEPLACE.

IMPROVEMENT IN DEVICES FOR CUTTING'OFF AND DRESSING THE ENDS 0F TUBES.

Specification forming part of Letters Patent No. 155,143, datedSeptember 22, 1874; application-filed July 6, 1874.

To all whom it may concern:

Be it known that I, WILLIAM CHESTER, of New York, in the county of NewYork and State of New York, have invented an Improved Attachment forLathes for Guttin g Piping, Shafting, 850., of which the following is aspecification My invention relates to lathes for cutting or turningmetal pipes or shafts; and consists in a novel construction,combination, and arrangement of parts which have for their object to cutthe shaft or pipe into lengths and remove the outer skin or surface ofthe metal at one operation, as will be fully hereafter set forth.

Figure l is a transverse sectional elevation of a lathe provided with myimprovement. Fig. 2 is a top view of Fig. 1.

A represents a portion of the frame of a lathe, provided with a hole, a,at its middle, through which the pipe to be out passes. Bis a blocksliding in the groove b in the frame A. O is the cutting-tool, securedto the head B. D is a screw for feeding the cuttingtool up. to the pipeor shaft to be cut. E is a block situated opposite to the cutting-tool Oon the frame A. This block has an angular recess or groove, b, cuttransversely of its face, and the upper side of this groove is serratedor provided with cutting-teeth c c.

The pipe or shaft F to be cut is secured in a chuck or mandrel, andpassed through the hole a. The pipe or shaft being rotated, the tool (Jand blockE are moved up to it, till the sides of the angular recess inthe block E are in close proximity thereto. The pressure of the tool 0,as it is fed up to and cuts into the pipe, will press it (the pipe)against the sides of the recess in the block E, and as the pipe revolvesits skin or rough exterior will be turned off by the serrated or cuttingsurface of the recess, and thus both operations of cutting oft thelengths of pipe or shafting and truing up the periphery at the extremityof the pipes, to facilitate threading, fitting,

8210., are accomplished at once, While, at the same time, the block Eacts as a support for the pipe or shaft during the operation of cutting.

The surfaces of the recess in the block E are slightly concave, asshown, and one, 61, is made smooth, to obviate friction.

It will be perceived that by having the 1ecess in the block angular anysize of pipe that can enter it can be accommodated, and be held firm forthe cutting-tool to operate upon.

I claim The combination, with the cuttingtool G, of the block E, withits angular recess, one surface of which is provided With cuttingteeth,whereby the work is cut into lengths and smoothed on its periphery atthe extremity by one operation, substantiallyin the manner described andspecified.

WILLIAM CHESTER.

Witnesses I STEPHEN S.-HOE, GIRARD McENTEE.

